Wall-plaster and cement for brickwork.



I06. COMPOSITIONS,

COATING OR PLASTIC.

I 662 6 Examiner WILLIAM S. GRISWOLD, OF ELYRIA, OHIO.

WALL-PLASTER AND CEMENT FOR BRICKWORK.

SPECIFICATION forming part of Letters Patent No. 662. dated b r 2'7, 1

' Application filed April 6, 1900. Serial No. 11,792. (No Specimens.)

To all whom it may concern.

tarder, as it is common in all cement and wall Be it known that I,WILLIAM S. GRISWOLD, plastersin which gypsum and cemeni are coma citizenof the United States, residing at ponent parts. Elyria, in the county ofLorain and State of The proportions of my ingredients above 5 Ohio, haveinvented a new and useful Gomspecified maybe varied more or less andgive position of Matter to be Used as a Wailgood results;buttheproportions abovegiveu, Plaster and Cement for Brickwork, of which allthings considered, I believe to be the best. the following is aspecification. The combination of the ingredients specified Mycomposition consists of the followinginmake a plaster that works easilyunder they 10 gredients or their equivalents combined sub trowel, haslarge covering capacity, and bestantially in the proportions,byweight,as folcomes very strong, hard, and tough a few days lows, to wit:calcined v sumor laster-ofafter being used. It is not liable to crack,

1v ran to cemen chip, or crumble, will not deteriorate appregem cia-blyor lose its strength or firmness by age, round or ulverized as many ofthe wall-plasters that are otherten arts, iiioroughly wise compoundeddo. It does not gather e an intermixed. to be useda. s a dampness and isslightly affected by fire or walll-aster on lathing, Ialso incorporateand changes of temperature. The materials are mix with the aboveingredients any of the on cheaply and easily procured and the plaster 2odinary fibers in such proportions as may be easily made and when wantedfor use is desired,varying the quantity andthe amount mixed with waterto the desired plasticity according to the grade and quality of fiberand spread in the ordinary manner, when afused. In case of using woodfiber I recomter drying, by reason of the chemical afiinimend and woulduse a u I seen and onetiesand actionof thesevera-lingredientsupon 25half parts, by weight, of dry wood fiber. If each other, ahomogeneou's,strong, tough, and

- sbestos hair or other fiber should be used, durable combination isformed which is spe- -1e quantity iould be sufficient to obtain reciallyadapted for the purposes designed sults satisfactory to the partyusingit; also, a without any of the common objections, such filler maybe used in combination with the as dam ness and deterioration, attending30 above ingredients to give it more bulk, and plasters where lime,clay, and kindred subconseqnently greater covering capacity, as stancesare used as component parts of such ranulated cork or fine sawdust. Whenused plasters.

or p as er or cemen on no walls, sand What I claim as new, and desire tosecure should be added in such quantities as may by Letters Patent ofthe United States, is

35 be found desirable-from one-half to two- Acomposition of mattercomprising calthirds, by weight, of the total amount--and cined gypsum,cgpy nt, shalp and ljmestgnein also a stuccorctarder should be added incomoinatiim in thcproportions specified and cases Where the same is useda wall-plaster in which is incorporated suitable fiber and in amountsuflicient to retard the setting stucco-retarder, all forthe purposes asabove 40 qualities of the calcined gypsum for a sufi set forth andsubstantially as described.

cient length of time to finish working and In testimony whereof I havesigned my floating down the plaster after being spread name to thisspecification, this 31st day of on the walls. This amount will be variedac- March, A. D. 1900, in the presence of two cording to the quality ofthe retarder used, subscribing witnesses.

45 being about three-tenths of one per cent., by WILT 1AM S GRISWOI Dweight, of the amount of gypsum used of the J ordinary commercialarticle known by the Witnesses: name of stucco-retarder. MABEL R. COPAS,

I do not make any claim to the stucco-re- MARY E. FAY.

